Top casting for barbecue grill



FIG. 1 is a perspective view of a top casting for barbecue grill showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a top casting for barbecue grill, as shown and described. 